Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico
Background and Aims: Individuals of Balmea stormiae (Rubiaceae) are trees or hemiepiphytic shrubs that inhabit pine-oak forests on rock outcrops in disjunct populations of Central America and Mexico. The species is considered endangered and especially the populations of Michoacán have been reported...
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| Formaat: | Online |
| Taal: | spa |
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Instituto de Ecología, A.C.
2022
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| Online toegang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/2119 |
| _version_ | 1799771422998921216 |
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| author | Mejía-Jiménez, Dulce Karina Montero Castro, Juan Carlos González-Rodríguez, Antonio Lara-Cabrera, Sabina Irene Ruiz-Sánchez, Eduardo Mendoza-Cuenca, Luis Felipe |
| author_facet | Mejía-Jiménez, Dulce Karina Montero Castro, Juan Carlos González-Rodríguez, Antonio Lara-Cabrera, Sabina Irene Ruiz-Sánchez, Eduardo Mendoza-Cuenca, Luis Felipe |
| author_sort | Mejía-Jiménez, Dulce Karina |
| collection | ABM |
| description | Background and Aims: Individuals of Balmea stormiae (Rubiaceae) are trees or hemiepiphytic shrubs that inhabit pine-oak forests on rock outcrops in disjunct populations of Central America and Mexico. The species is considered endangered and especially the populations of Michoacán have been reported as exposed to strong anthropogenic pressures. For this reason, in this study the genetic diversity of four populations of Michoacán was estimated, contrasting this information with that obtained from one population of Jalisco, both regions located in west-central Mexico.Methods: Samples were collected in five populations in the western region of the Trans-Mexican Volcanic Belt. The chloroplast rps16 intron, the external transcribed spacer of ribosomal DNA (ETS) and seven Inter-Simple Sequence Repeats of nuclear DNA (ISSR) were used to assess genetic diversity.Key results: Molecular markers revealed high genetic differentiation between the populations from Jalisco and Michoacán, attributed to the low connectivity amongst them, probably due to the low long distance dispersal capacity of seeds and pollen. Moderate genetic flow and demographic expansion were detected for populations in Michoacán. The degree of genetic diversity in Michoacán populations are consistent with the age of lava flows, whereby Arocutín and Zacapu are the most diverse populations located on the oldest lava flows.Conclusions: Results could be explained by the relatively recent origin, resulting from Holocene volcanic activity, of the environments in which the species inhabits, coupled with the recurring disturbance related to large pre-Hispanic settlements. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-2119 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-21192023-01-12T08:08:30Z Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico Variación genética de Balmea stormiae (Rubiaceae) en el centro-occidente de México Mejía-Jiménez, Dulce Karina Montero Castro, Juan Carlos González-Rodríguez, Antonio Lara-Cabrera, Sabina Irene Ruiz-Sánchez, Eduardo Mendoza-Cuenca, Luis Felipe conservation genetics genetic structure hardwood hemi-epiphyte vegetation of lava flow estructura genética genética de la conservación hemiepífita madera dura vegetación de malpaís Background and Aims: Individuals of Balmea stormiae (Rubiaceae) are trees or hemiepiphytic shrubs that inhabit pine-oak forests on rock outcrops in disjunct populations of Central America and Mexico. The species is considered endangered and especially the populations of Michoacán have been reported as exposed to strong anthropogenic pressures. For this reason, in this study the genetic diversity of four populations of Michoacán was estimated, contrasting this information with that obtained from one population of Jalisco, both regions located in west-central Mexico.Methods: Samples were collected in five populations in the western region of the Trans-Mexican Volcanic Belt. The chloroplast rps16 intron, the external transcribed spacer of ribosomal DNA (ETS) and seven Inter-Simple Sequence Repeats of nuclear DNA (ISSR) were used to assess genetic diversity.Key results: Molecular markers revealed high genetic differentiation between the populations from Jalisco and Michoacán, attributed to the low connectivity amongst them, probably due to the low long distance dispersal capacity of seeds and pollen. Moderate genetic flow and demographic expansion were detected for populations in Michoacán. The degree of genetic diversity in Michoacán populations are consistent with the age of lava flows, whereby Arocutín and Zacapu are the most diverse populations located on the oldest lava flows.Conclusions: Results could be explained by the relatively recent origin, resulting from Holocene volcanic activity, of the environments in which the species inhabits, coupled with the recurring disturbance related to large pre-Hispanic settlements. Antecedentes y Objetivos: Los individuos de Balmea stormiae (Rubiaceae) son árboles o arbustos hemiepífitos que habitan malpaíses con bosques de pino-encino en poblaciones disyuntas en Centroamérica y México. La especie se considera en peligro de extinción y particularmente se ha documentado que las poblaciones de Michoacán han estado expuestas a fuertes presiones antropogénicas. Por tal motivo, en este estudio se estimó la diversidad genética en cuatro poblaciones de Michoacán, contrastando esta información con la obtenida en una población de Jalisco, ambas regiones ubicadas en el centro-occidente de México.Métodos: Las muestras vegetales fueron recolectadas en cinco poblaciones de la región occidente del Cinturón Volcánico Transmexicano. Para evaluar la diversidad genética, se utilizó el intrón rps16 del ADN de cloroplasto, el espaciador transcrito externo (ETS) del ADN ribosomal nuclear y marcadores dominantes ISSR de ADN nuclear (Inter Secuencias Simples Repetidas por sus siglas en inglés).Resultados clave: Los marcadores moleculares revelaron alta diferenciación genética entre las poblaciones de Jalisco y Michoacán, la cual se atribuye a la baja conectividad entre estas. Posiblemente se deba a la baja capacidad de dispersión a larga distancia de las semillas y el polen. Se detectó flujo genético moderado y expansión demográfica reciente en las poblaciones de Michoacán. Los niveles de variación genética en las poblaciones de Michoacán concuerdan con la edad de los flujos de lava, siendo Arocutín y Zacapu las poblaciones más diversas sobre los flujos de lava más antiguos.Conclusiones: Los resultados podrían explicarse por el origen relativamente reciente, producto de la actividad volcánica del Holoceno, de los ambientes en los que habita esta especie, sumado a la perturbación recurrente relacionada con grandes asentamientos prehispánicos de Michoacán. Instituto de Ecología, A.C. 2022-11-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/xml application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/2119 10.21829/abm129.2022.2119 Acta Botanica Mexicana; No. 129 (2022) Acta Botanica Mexicana; Núm. 129 (2022) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/2119/4316 https://abm.ojs.inecol.mx/index.php/abm/article/view/2119/4354 https://abm.ojs.inecol.mx/index.php/abm/article/view/2119/4317 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Mejía-Jiménez, Dulce Karina Montero Castro, Juan Carlos González-Rodríguez, Antonio Lara-Cabrera, Sabina Irene Ruiz-Sánchez, Eduardo Mendoza-Cuenca, Luis Felipe Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title | Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title_full | Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title_fullStr | Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title_full_unstemmed | Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title_short | Genetic variation of Balmea stormiae (Rubiaceae) in west-central Mexico |
| title_sort | genetic variation of balmea stormiae (rubiaceae) in west-central mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/2119 |
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